<html>
<body>
	<h1>LongTaskFrame</h1>
	<script>
	// loop for 1500ms to trigger a long frame
	var startTime = (new Date()).getTime();
	var now = startTime;
	var endTime = startTime + 1500;
	var math = 1;

	while (now < endTime) {
		now = (new Date()).getTime();
		math *= 2;
		math *= 0.5;
	}
	</script>
</body>
</html>
